Standard USB2.0 socket, output, high-speed operation, fast data transmission.The motherboard fixing bracket adopts the double-folding scheme design to be stable, firm, strong and durable.All solid-state capacitors are used with high-performance high-quality electronic components. Solid-state capacitors are environmentally friendly, low impedance, and stable at high and low temperatures.Using high-end chips, technology. 720101F1 (BGA) chip.Thickened gold are gold-plated and connected to the USB slot of the motherboard to the integrity of data transmission and stable operation.Support PCI 32-bit bus, bus speed is 33MHz, PCI standard version 2.2Support PCI bus master channelPlug and play compatibleUSB2.0 interface: Compliant with Universal Serial Bus (USB) specification revision 2.0, compliant with Enhanced Controller Interface (ehci) specification revision 1.0, compatible with Universal Controller Interface (uhci) specification revision 1.1, backward compatible with USB 1.1 normData transmission rate: high speed 480Mbps. (theoretical value) full speed 12Mbps, low speed 1.5Mbps;Supports connecting up to 127 USB devices, simultaneously to each USB interface;External port: USB x4, Internal port: USB-A/Pin x1;System Requirements: At least one available 32-bit PCI slot on PC; Supported OS: Windows 98SE/Me/2000/XP/NT 4.0/XP 64-bit/Vista, Linux, Type: Riser CardInterface: USBcolor:BlackMaterial:PCBPackage Contents:1 x Riser CardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.